Migrate to pyproject.toml and upgrade dependencies

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (b2c856d) 57.60% compared to head (d0a18c1) 57.60%. Report is 8 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #50 +/- ## ======================================= Coverage 57.60% 57.60% ======================================= Files 7 7 Lines 493 493 ======================================= Hits 284 284 Misses 209 209 ``` | [Flag](https://app.codecov.io/gh/GispoCoding/pytest-qgis/pull/50/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=GispoCoding) | Coverage Δ | | |---|---|---| | [pytest](https://app.codecov.io/gh/GispoCoding/pytest-qgis/pull/50/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=GispoCoding) | `57.60% <ø> (ø)` | | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=GispoCoding#carryforward-flags-in-the-pull-request-comment) to find out more.

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